[NVBug: 5707914] Update DS V3 repo commit id (NVIDIA#635)

## What does this PR do?

**Type of change:** ? Bug fix

**Overview:** 

DS V3 repo commit id update so the DS R1/V3.1 models can be correctly
loaded.

Signed-off-by: Chenjie Luo <[email protected]>

Author: cjluo-nv

examples/deepseek/README.md

@@ -23,7 +23,7 @@ export HF_FP4_PATH={path_to_save_the_final_FP4_checkpoint}
 huggingface-cli download deepseek-ai/DeepSeek-R1 --local-dir $HF_FP8_CKPT
 
 # clone DeepSeek-V3 (base model of R1) Github repository for FP8 inference,
-git clone https://github.com/deepseek-ai/DeepSeek-V3.git && cd DeepSeek-V3 && git checkout 1398800
+git clone https://github.com/deepseek-ai/DeepSeek-V3.git && cd DeepSeek-V3 && git checkout 9b4e978
 ```
 
 ### [Experimental] DeepSeek V3.2